CN113999346A - SIS elastomer modified waterborne alkyd resin and preparation method thereof - Google Patents
SIS elastomer modified waterborne alkyd resin and preparation method thereof Download PDFInfo
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- CN113999346A CN113999346A CN202111427524.5A CN202111427524A CN113999346A CN 113999346 A CN113999346 A CN 113999346A CN 202111427524 A CN202111427524 A CN 202111427524A CN 113999346 A CN113999346 A CN 113999346A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
- C08G81/02—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C08G81/024—Block or graft polymers containing sequences of polymers of C08C or C08F and of polymers of C08G
- C08G81/027—Block or graft polymers containing sequences of polymers of C08C or C08F and of polymers of C08G containing polyester or polycarbonate sequences
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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Abstract
The invention relates to an SIS elastomer modified waterborne alkyd resin and a preparation method thereof, wherein the SIS elastomer modified waterborne alkyd resin comprises the following components in parts by weight: 15.0-25.0 parts of unsaturated fatty acid, 2.0-5.0 parts of SIS elastomer, 4.0-8.0 parts of 3-phenyl-2-acrylic acid-2-allyl ester, 8.0-15.0 parts of organic acid anhydride, 4.0-9.0 parts of dibasic acid, 10.0-24.0 parts of polyol, 3.0-5.0 parts of styrene, 2.0-3.5 parts of benzoic acid, 0.4-1.0 part of di-tert-butyl peroxide, 10.0-20.0 parts of xylene, 3.0-6.0 parts of dimethylolbutyric acid, 0.3-0.8 part of antioxidant, 5.0-10.0 parts of film-forming assistant, 2.5-8.0 parts of neutralizer and 100.0-200.0 parts of deionized water; according to the invention, the SIS elastomer and the alkyd resin structure are connected through a chemical bond to obtain the alkyd resin with a hyperbranched structure, and the structure is stable; the SIS elastomer modified waterborne alkyd resin prepared by the invention has the advantages of good fullness, good anti-sagging performance, good flexibility, strong corrosion resistance and the like.
Description
Technical Field
The invention relates to a modified waterborne alkyd resin, in particular to an SIS elastomer modified waterborne alkyd resin and a preparation method thereof, belonging to the technical field of waterborne functional resin synthesis.
Background
The water-based alkyd resin is a high-acid-value low-viscosity resin prepared by esterification and polycondensation of polyhydric alcohol, polybasic acid and vegetable oil (acid) or other fatty acid. The paint uses aromatic acid ester as a main chain and aliphatic acid polyester as a side chain, wherein the aromatic acid ester provides rigidity, the aliphatic acid ester provides flexibility, and the alkyd resin is used as one of the most important synthetic resins for paint.
Alkyd resin is a synthetic resin with wide application, widely exists in our domestic application, and the paint prepared by the alkyd resin has bright paint film and excellent gloss, but has the defects of: the anti-sagging performance is poor, the adhesive force is not enough, the requirements on the coating are gradually increased along with the improvement of the life quality of people, and the single alkyd resin is difficult to meet the requirements, so that the modified alkyd resin becomes a research hotspot in the field of alkyd resins and is also the development direction of the alkyd resin.
SIS elastomers are one type of styrenic thermoplastic elastomers, being block copolymers of styrene and isoprene. SIS is a novel thermoplastic elastomer, has the characteristics of high elasticity, easiness in processing, easiness in blending, recyclable residual materials and the like, so that the application range and the demand of the SIS are increasingly enlarged, and the SIS has larger market application potential. Therefore, the SIS elastomer is adopted to improve the performance of the waterborne alkyd resin, and some defects of the current waterborne alkyd resin are effectively overcome.
Disclosure of Invention
The SIS elastomer has good flexibility and cohesion, and can effectively solve the problems of easy sagging of a paint film during construction, poor adhesion of alkyd resin to certain base materials and the like.
In order to solve the technical problems existing at present, the SIS elastomer contains double bonds and can be effectively connected with the main structure of the alkyd resin.
Meanwhile, in order to solve the problems of fullness of a coating and compatibility of a film-forming substance and the water-based resin after the coating is prepared, the film-forming substance is added in the invention when the water-based alkyd resin is prepared, and the viscosity of the alkyd resin in the preparation process can be effectively reduced due to the addition of the film-forming substance, thereby being beneficial to the dispersion of the water-based alkyd resin.
The first object of the present invention is to provide an SIS elastomer-modified waterborne alkyd resin.
The second purpose of the invention is to provide a preparation method of the SIS elastomer modified waterborne alkyd resin.
In order to realize the first purpose of the invention, the invention adopts the following technical scheme: the invention relates to SIS elastomer modified waterborne alkyd resin which comprises the following components in parts by weight: 15.0-25.0 parts of unsaturated fatty acid, 2.0-5.0 parts of SIS elastomer, 4.0-8.0 parts of 3-phenyl-2-acrylic acid-2-allyl ester, 8.0-15.0 parts of organic acid anhydride, 4.0-9.0 parts of dibasic acid, 10.0-24.0 parts of polyol, 3.0-5.0 parts of styrene, 2.0-3.5 parts of benzoic acid, 0.4-1.0 part of di-tert-butyl peroxide, 10.0-20.0 parts of dimethylbenzene, 3.0-6.0 parts of dimethylolbutyric acid, 0.3-0.8 part of antioxidant, 5.0-10.0 parts of film-forming assistant, 2.5-8.0 parts of neutralizer and 100.0-200.0 parts of deionized water.
Wherein, the SIS elastomer is styrene-isoprene-styrene copolymer.
The unsaturated fatty acid is one or the combination of two of refined linseed oil and refined castor oil.
The organic acid anhydride is one or a combination of more of phthalic anhydride, hexahydrophthalic anhydride, acetic anhydride, trimellitic anhydride and maleic anhydride.
The polybasic acid is one or a combination of more of cyclopentane-1, 2-dicarboxylic acid, oxalic acid, adipic acid and azelaic acid.
The film-forming additive is one or a combination of a plurality of alcohol ester dodeca, propylene glycol phenyl ether, cetyl alcohol ester, dipropylene glycol butyl ether and propylene glycol methyl ether acetate.
The polyalcohol is one or more of neopentyl glycol, 1, 4-butanediol, 1, 4-cyclohexanedimethanol, diethylene glycol, trimethylolpropane, glycerol and pentaerythritol.
The neutralizing agent is at least one of triethylamine, ammonia water and dimethylethanolamine.
In order to achieve the second object of the present invention, the following method is adopted, and the present invention provides a preparation method of an SIS elastomer modified waterborne alkyd resin, which comprises the following steps:
a) uniformly stirring styrene, 3-phenyl-2-acrylic acid-2-allyl ester and 3/4 di-tert-butyl peroxide to obtain a mixed solution I;
b) sequentially adding unsaturated fatty acid, organic acid anhydride, dibasic acid, polyalcohol, dimethylolbutyric acid, antioxidant and dimethylbenzene according to the weight part of the formula in a reactor, and heating for dissolving;
c) heating to 160-162 ℃, keeping the temperature, stirring, reacting for 2.0h, adding benzoic acid to control the molecular weight, heating to 180 ℃, keeping the temperature, reacting for 2.0h, heating to 220-224 ℃ at the speed of 20 ℃/h, keeping the temperature, reacting for 1.0h, measuring the acid value every 15min, and when the acid value reaches the design value;
d) cooling, adding the SIS elastomer and 1/4 di-tert-butyl peroxide, stirring and reacting for 1.0 hour to obtain SIS elastomer grafted alkyd resin prepolymer; (SIS elastomer is added at this point, the SIS elastomer is a solid and is xylene soluble in this system);
e) and distilling under reduced pressure to remove xylene, adding a film-forming aid, stirring and dispersing uniformly and reducing viscosity, keeping the temperature at 120-124 ℃, dropwise adding the mixed solution I for 1.5-2.0 h, stirring and reacting for 0.5h, cooling, stirring at high speed, dispersing and adding a neutralizing agent, adding deionized water according to the formula amount, dispersing uniformly, and filtering to obtain the SIS elastomer modified waterborne alkyd resin.
The SIS elastomer modified waterborne alkyd resin prepared by the invention has the following advantages:
1) the SIS elastomer modified waterborne alkyd resin prepared by the invention is characterized in that the SIS elastomer and the waterborne alkyd resin are connected through chemical bonds, the structure is stable, the performance is durable, when the paint is prepared, no additional anti-sagging agent is needed, the anti-sagging performance is good, and the addition of the SIS elastomer can enable the prepared SIS elastomer modified waterborne alkyd resin to be hyperbranched;
2) the 3-phenyl-2-acrylic acid-2-propenyl ester introduced by the invention contains benzene ring, ester group and double bond, and styrene is added, so that the hardness and flexibility of a paint film can be effectively balanced, and the SIS elastomer can be effectively grafted in an alkyd resin system; when the SIS elastomer modified waterborne alkyd resin is prepared, a film-forming substance is added, so that the fullness of the alkyd resin is improved, and the problem of compatibility of a film-forming auxiliary agent and the waterborne alkyd resin is effectively solved;
3) the SIS elastomer modified waterborne alkyd resin prepared by the invention has the advantages of good fullness, good anti-sagging performance, high hardness, good flexibility, strong corrosion resistance and the like, can be used for waterborne wood coatings, waterborne steel framework anticorrosive coatings and the like, and has great application potential.
Detailed Description
The preparation of the SIS elastomer-modified waterborne alkyd is further described in connection with the following examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention.
Example 1
An SIS elastomer modified waterborne alkyd resin comprises the following components in parts by weight: 25.0 parts of refined linseed oil, 3.0 parts of SIS elastomer, 6.0 parts of 3-phenyl-2-acrylic acid-2-propenyl ester, 8.0 parts of phthalic anhydride, 3.0 parts of acetic anhydride, 9.0 parts of cyclopentane-1, 2-dicarboxylic acid, 15.0 parts of neopentyl glycol, 6.0 parts of trimethylolpropane, 3.0 parts of styrene, 2.5 parts of benzoic acid, 0.6 part of di-tert-butyl peroxide, 16.0 parts of xylene, 6.0 parts of dimethylolbutyric acid, 0.6 part of antioxidant, 8.0 parts of alcohol ester, 5.5 parts of ammonia water and 120.0 parts of deionized water.
The preparation method of the SIS elastomer modified waterborne alkyd resin in the embodiment comprises the following steps:
a) uniformly stirring styrene, 3-phenyl-2-acrylic acid-2-allyl ester and 3/4 di-tert-butyl peroxide to obtain a mixed solution I;
b) sequentially adding refined linseed oil, phthalic anhydride, acetic anhydride, cyclopentane-1, 2-dicarboxylic acid, polyol, dimethylolbutyric acid, an antioxidant and xylene into a reactor according to the weight part of the formula, and heating for dissolving;
c) heating to 160-162 ℃, keeping the temperature, stirring, reacting for 2.0h, adding benzoic acid to control the molecular weight, heating to 180 ℃, keeping the temperature, reacting for 2.0h, heating to 220-224 ℃ at the speed of 20 ℃/h, keeping the temperature, reacting for 1.0h, measuring the acid value every 15min, and when the acid value reaches the design value;
d) cooling, adding the SIS elastomer and 1/4 di-tert-butyl peroxide, stirring and reacting for 1.0 hour to obtain SIS elastomer grafted alkyd resin prepolymer;
e) and distilling under reduced pressure to remove xylene, adding alcohol ester, stirring uniformly to disperse and reduce viscosity, keeping the temperature at 120-124 ℃, dropwise adding the mixed solution I for 1.5-2.0 h, stirring to react for 0.5h, cooling, stirring at high speed to disperse and add ammonia water, adding deionized water according to the formula amount, dispersing uniformly, and filtering to obtain the SIS elastomer modified waterborne alkyd resin, wherein the sample 1 is marked.
Example 2
An SIS elastomer modified waterborne alkyd resin comprises the following components in parts by weight: 18.0 parts of refined castor oil, 5.0 parts of SIS elastomer, 6.0 parts of 3-phenyl-2-acrylic acid-2-propenyl ester, 8.0 parts of hexahydrophthalic anhydride, 5.0 parts of maleic anhydride, 5.0 parts of adipic acid, 12.0 parts of 1, 4-butanediol, 4.0 parts of pentaerythritol, 4.0 parts of styrene, 3.0 parts of benzoic acid, 0.8 part of di-tert-butyl peroxide, 17.0 parts of xylene, 6.0 parts of dimethylolbutyric acid, 0.6 part of antioxidant, 4.0 parts of dipropylene glycol butyl ether, 4.0 parts of propylene glycol methyl ether acetate, 6.0 parts of triethylamine and 140.0 parts of deionized water.
The preparation method of the SIS elastomer modified waterborne alkyd resin in the embodiment comprises the following steps:
a) uniformly stirring styrene, 3-phenyl-2-acrylic acid-2-allyl ester and 3/4 di-tert-butyl peroxide to obtain a mixed solution I;
b) adding refined castor oil, hexahydrophthalic anhydride, maleic anhydride, adipic acid, 1, 4-butanediol, pentaerythritol, dimethylolbutyric acid, an antioxidant and xylene in a reactor according to the weight part of the formula in turn, and heating for dissolving;
c) heating to 160-162 ℃, keeping the temperature, stirring, reacting for 2.0h, adding benzoic acid to control the molecular weight, heating to 180 ℃, keeping the temperature, reacting for 2.0h, heating to 220-224 ℃ at the speed of 20 ℃/h, keeping the temperature, reacting for 1.0h, measuring the acid value every 15min, and when the acid value reaches the design value;
d) cooling, adding the SIS elastomer and 1/4 di-tert-butyl peroxide, stirring and reacting for 1.0 hour to obtain SIS elastomer grafted alkyd resin prepolymer;
e) and distilling under reduced pressure to remove xylene, adding dipropylene glycol butyl ether and propylene glycol methyl ether acetate, stirring and dispersing uniformly and reducing viscosity, keeping the temperature at 120-124 ℃, dropwise adding the mixed solution I, wherein the dropwise adding time is 1.5-2.0 h, then stirring and reacting for 0.5h, cooling, stirring at high speed to disperse and add triethylamine, adding deionized water according to the formula amount, dispersing uniformly, and filtering to obtain the SIS elastomer modified waterborne alkyd resin, wherein the sample 2 is obtained.
Example 3
An SIS elastomer modified waterborne alkyd resin comprises the following components in parts by weight: 15.0 parts of refined linseed oil, 3.5 parts of SIS elastomer, 7.0 parts of 3-phenyl-2-acrylic acid-2-propenyl ester, 15.0 parts of trimellitic anhydride, 6.0 parts of azelaic acid, 13.0 parts of 1, 4-cyclohexanedimethanol, 4.0 parts of glycerol, 3.0 parts of styrene, 3.0 parts of benzoic acid, 0.6 part of di-tert-butyl peroxide, 15.0 parts of xylene, 5.0 parts of dimethylolbutyric acid, 0.5 part of antioxidant, 7.0 parts of propylene glycol phenyl ether, 6.5 parts of dimethylethanolamine and 125.0 parts of deionized water.
The preparation method of the SIS elastomer modified waterborne alkyd resin in the embodiment comprises the following steps:
a) uniformly stirring styrene, 3-phenyl-2-acrylic acid-2-allyl ester and 3/4 di-tert-butyl peroxide to obtain a mixed solution I;
b) sequentially adding refined linseed oil, trimellitic anhydride, azelaic acid, 1, 4-cyclohexanedimethanol, glycerol, dimethylolbutyric acid, an antioxidant and xylene into a reactor according to the weight part of the formula, and heating for dissolving;
c) heating to 160-162 ℃, keeping the temperature, stirring, reacting for 2.0h, adding benzoic acid to control the molecular weight, heating to 180 ℃, keeping the temperature, reacting for 2.0h, heating to 220-224 ℃ at the speed of 20 ℃/h, keeping the temperature, reacting for 1.0h, measuring the acid value every 15min, and when the acid value reaches the design value;
d) cooling, adding the SIS elastomer and 1/4 di-tert-butyl peroxide, stirring and reacting for 1.0 hour to obtain SIS elastomer grafted alkyd resin prepolymer;
e) and carrying out reduced pressure distillation to remove xylene, adding propylene glycol phenyl ether, stirring and dispersing uniformly and reducing viscosity, keeping the temperature at 120-124 ℃, dropwise adding the mixed solution I for 1.5-2.0 h, then stirring and reacting for 0.5h, cooling, stirring and dispersing at high speed, adding dimethylethanolamine, adding deionized water according to the formula amount, dispersing uniformly, and filtering to obtain the SIS elastomer modified waterborne alkyd resin, wherein the sample 3 is marked.
Comparative example 1
A conventional modified waterborne alkyd resin comprises the following components in parts by weight: 20.0 parts of refined linseed oil, 6.0 parts of 3-phenyl-2-acrylic acid-2-propenyl ester, 8.0 parts of hexahydrophthalic anhydride, 4.0 parts of acetic anhydride, 7.0 parts of azelaic acid, 14.0 parts of diethylene glycol, 5.0 parts of trimethylolpropane, 5.0 parts of styrene, 3.0 parts of benzoic acid, 0.9 part of di-tert-butyl peroxide, 18.0 parts of dimethylbenzene, 5.5 parts of dimethylolbutyric acid, 0.7 part of antioxidant, 8.5 parts of hexadecanol ester, 6.0 parts of triethylamine and 130.0 parts of deionized water.
The preparation method of the conventional modified waterborne alkyd resin in the embodiment comprises the following steps:
a) uniformly stirring styrene, 3-phenyl-2-acrylic acid-2-allyl ester and di-tert-butyl peroxide to obtain a mixed solution I;
b) sequentially adding refined linseed oil, hexahydrophthalic anhydride, acetic anhydride, azelaic acid, diethylene glycol, trimethylolpropane, dimethylolbutyric acid, an antioxidant and dimethylbenzene according to the weight part of the formula in a reactor, and heating for dissolving;
c) heating to 160-162 ℃, keeping the temperature, stirring, reacting for 2.0h, adding benzoic acid to control the molecular weight, heating to 180 ℃, keeping the temperature, reacting for 2.0h, heating to 220-224 ℃ at the speed of 20 ℃/h, keeping the temperature, reacting for 1.0h, measuring the acid value every 15min, and when the acid value reaches the design value;
d) and distilling under reduced pressure to remove xylene, adding hexadecanol ester, stirring and dispersing uniformly and reducing viscosity, keeping the temperature at 120-124 ℃, dropwise adding the mixed solution I for 1.5-2.0 h, stirring and reacting for 0.5h, cooling, stirring at high speed and dispersing, adding triethylamine, adding deionized water according to the formula amount, dispersing uniformly, and filtering to obtain the conventional modified waterborne alkyd resin, wherein the sample is marked as sample 4.
And (3) testing performance indexes: samples 1, 2, 3 and 4 (comparative example 1) in the above examples were prepared into coatings according to the raw material formulation shown in table 1, and the corresponding coating samples were respectively designated as coating 1, coating 2, coating 3 and coating 4, and the properties thereof were respectively tested.
Table 1: coating formulation
The prepared coating is tested for performance indexes according to relevant standards, and the test results are shown in table 2.
Wherein, the adhesive force is as follows: detecting according to the regulation of GB/T1720-1988;
hardness: detecting according to the regulation of GB/T6739-2006;
water resistance: detecting according to the regulation of GB/T1733-93;
flexibility: detection is carried out according to the specification of GB/T1731-1993;
impact resistance: detecting according to the GB/T1732-2020;
sag resistance: detecting according to the regulation of GB/T9264-2012;
salt spray resistance: the assay was carried out as specified in GB/T1771-1991.
Table 2: performance specification of coating
| Detecting items | Coating 1 | Paint 2 | Coating 3 | Coating 4 |
| Adhesion force | Level 0 | Level 0 | Level 0 | Stage 2 |
| Water resistance/480 h | Normal paint film | Normal paint film | Normal paint film | Normal paint film |
| Hardness of pencil | HB | HB | HB | B |
| Salt spray resistance/480 h | Normal paint film | Normal paint film | Normal paint film | Discoloration of paint film |
| Impact resistance | Normal paint film | Normal paint film | Normal paint film | Cracking of paint film |
| Flexibility/mm | 1 | 1 | 1 | 2 |
| Sag resistance | Good effect | Good effect | Good effect | In general |
It can be seen from table 2 that the acid mist resistance, adhesion, impact resistance, flexibility, sag resistance, etc. of coating 1, coating 2, and coating 3 of the present invention are better than those of the coating 4 sample, which indicates that the SIS elastomer modified waterborne alkyd resin of the present invention has good impact resistance and sag resistance, etc.
The foregoing description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed; it will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (8)
1. An SIS elastomer modified waterborne alkyd resin is characterized in that: the composition comprises the following components in parts by weight: 15.0-25.0 parts of unsaturated fatty acid, 2.0-5.0 parts of SIS elastomer, 4.0-8.0 parts of 3-phenyl-2-acrylic acid-2-allyl ester, 8.0-15.0 parts of organic acid anhydride, 4.0-9.0 parts of dibasic acid, 10.0-24.0 parts of polyol, 3.0-5.0 parts of styrene, 2.0-3.5 parts of benzoic acid, 0.4-1.0 part of di-tert-butyl peroxide, 10.0-20.0 parts of xylene, 3.0-6.0 parts of dimethylolbutyric acid, 0.3-0.8 part of antioxidant, 5.0-10.0 parts of film-forming assistant, 2.5-8.0 parts of neutralizer and 100.0-200.0 parts of deionized water; wherein, the SIS elastomer is styrene-isoprene-styrene copolymer.
2. An SIS elastomer-modified waterborne alkyd according to claim 1, wherein: the unsaturated fatty acid is one or the combination of two of refined linseed oil and refined castor oil.
3. An SIS elastomer-modified waterborne alkyd according to claim 1, wherein: the organic acid anhydride is one or a combination of more of phthalic anhydride, hexahydrophthalic anhydride, acetic anhydride, trimellitic anhydride and maleic anhydride.
4. An SIS elastomer-modified waterborne alkyd according to claim 1, wherein: the polybasic acid is one or a combination of more of cyclopentane-1, 2-dicarboxylic acid, oxalic acid, adipic acid and azelaic acid.
5. An SIS elastomer-modified waterborne alkyd according to claim 1, wherein: the film-forming additive is one or a combination of a plurality of alcohol ester dodeca, propylene glycol phenyl ether, cetyl alcohol ester, dipropylene glycol butyl ether and propylene glycol methyl ether acetate.
6. An SIS elastomer-modified waterborne alkyd according to claim 1, wherein: the polyalcohol is one or more of neopentyl glycol, 1, 4-butanediol, 1, 4-cyclohexanedimethanol, diethylene glycol, trimethylolpropane, glycerol and pentaerythritol.
7. An SIS elastomer-modified waterborne alkyd according to claim 1, wherein: the neutralizing agent is at least one of triethylamine, ammonia water and dimethylethanolamine.
8. An SIS elastomer-modified waterborne alkyd according to claim 1, wherein: the preparation method of the SIS elastomer modified waterborne alkyd resin comprises the following steps:
a) uniformly stirring styrene, 3-phenyl-2-acrylic acid-2-allyl ester and 3/4 di-tert-butyl peroxide to obtain a mixed solution I;
b) sequentially adding unsaturated fatty acid, organic acid anhydride, dibasic acid, polyalcohol, dimethylolbutyric acid, antioxidant and dimethylbenzene according to the weight part of the formula in a reactor, and heating for dissolving;
c) heating to 160-162 ℃, keeping the temperature, stirring, reacting for 2.0h, adding benzoic acid to control the molecular weight, heating to 180 ℃, keeping the temperature, reacting for 2.0h, heating to 220-224 ℃ at the speed of 20 ℃/h, keeping the temperature, reacting for 1.0h, measuring the acid value every 15min, and when the acid value reaches the design value;
d) cooling, adding the SIS elastomer and 1/4 di-tert-butyl peroxide, stirring and reacting for 1.0 hour to obtain SIS elastomer grafted alkyd resin prepolymer; (SIS elastomer added at this point, SIS elastomer is solid and xylene soluble in this system)
e) And distilling under reduced pressure to remove xylene, adding a film-forming aid, stirring and dispersing uniformly and reducing viscosity, keeping the temperature at 120-124 ℃, dropwise adding the mixed solution I for 1.5-2.0 h, stirring and reacting for 0.5h, cooling, stirring at high speed, dispersing and adding a neutralizing agent, adding deionized water according to the formula amount, dispersing uniformly, and filtering to obtain the SIS elastomer modified waterborne alkyd resin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111427524.5A CN113999346A (en) | 2021-11-25 | 2021-11-25 | SIS elastomer modified waterborne alkyd resin and preparation method thereof |
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| CN202111427524.5A CN113999346A (en) | 2021-11-25 | 2021-11-25 | SIS elastomer modified waterborne alkyd resin and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110746590A (en) * | 2019-11-19 | 2020-02-04 | 合众（佛山）化工有限公司 | A kind of polyetheramine modified water-based alkyd resin and preparation method thereof |
| CN110862525A (en) * | 2019-11-19 | 2020-03-06 | 合众（佛山）化工有限公司 | A kind of APAO modified water-based alkyd resin and preparation method thereof |
| CN110894285A (en) * | 2019-12-07 | 2020-03-20 | 合众（佛山）化工有限公司 | Oleyl polyether-2 phosphate modified waterborne alkyd flame-retardant resin and preparation method thereof |
| CN112679711A (en) * | 2020-12-18 | 2021-04-20 | 合众（佛山）化工有限公司 | Tripolyindenone derivative modified waterborne alkyd resin and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110746590A (en) * | 2019-11-19 | 2020-02-04 | 合众（佛山）化工有限公司 | A kind of polyetheramine modified water-based alkyd resin and preparation method thereof |
| CN110862525A (en) * | 2019-11-19 | 2020-03-06 | 合众（佛山）化工有限公司 | A kind of APAO modified water-based alkyd resin and preparation method thereof |
| CN110894285A (en) * | 2019-12-07 | 2020-03-20 | 合众（佛山）化工有限公司 | Oleyl polyether-2 phosphate modified waterborne alkyd flame-retardant resin and preparation method thereof |
| CN112679711A (en) * | 2020-12-18 | 2021-04-20 | 合众（佛山）化工有限公司 | Tripolyindenone derivative modified waterborne alkyd resin and preparation method thereof |
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